I'll probably get beat up on this post....but the concensus is when we test a wick for a certain container and are having problems with the wicking or burning properties...the only concern seems to be the size or type of the wick...however I venture to say that not all wicks are created equal...meaning that some wicks in the packs that we buy could be defective...or not up to snuff and won't burn the way they are intended. I have discovered this a lot of times when I have double wicked containers one wick seems to do well the other wick or wicks are not hardly visable...and are ready to go out or drown out. I really believe that this is the case with a lot of testing that I have done...any comments???? Cheers